US 11,677,463 B2
Infrastructure integrity and attestation of an all-photonics network
Rowland Shaw, Chester, NH (US); Qing Ye, Hopkinton, MA (US); and Said Tabet, Austin, TX (US)
Assigned to Dell Products L.P., Round Rock, TX (US)
Filed by DELL PRODUCTS, LP, Round Rock, TX (US)
Filed on Sep. 30, 2021, as Appl. No. 17/490,506.
Application 17/490,506 is a continuation in part of application No. 17/241,951, filed on Apr. 27, 2021, granted, now 11,388,493.
Prior Publication US 2022/0345212 A1, Oct. 27, 2022
Int. Cl. H04B 10/071 (2013.01); H04B 10/077 (2013.01)
CPC H04B 10/071 (2013.01) [H04B 10/0771 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A data communication network, comprising:
a network node including an optical link and a reflectometry analyzer configured to provide a plurality of reflectometry results, each reflectometry result providing a characterization of physical and operational properties of the optical link at the time of the reflectometry result; and
a processor configured to:
receive a first set of the reflectometry results, wherein the first set of the reflectometry results includes a first plurality of fingerprints for a plurality of sections of the optical link, the first plurality of fingerprints includes a first fingerprint for a first section of the optical link and a second fingerprint for a second section of the optical link;
calculate a federated fingerprint of the physical and operational properties of the optical link based on the plurality of fingerprints in first set of the reflectometry results, wherein the federated fingerprint is a combination of each of the fingerprints for each respective section of sections of the optical link;
receive a second set of the reflectometry results including a second plurality of fingerprints for the plurality of sections of the optical link;
compare each of the second plurality of fingerprints in the second set of reflectometry results with a respective corresponding fingerprint of the first plurality of fingerprints in the federated fingerprint;
determine whether a physical tampering of the optical link has occurred based upon the comparison of the each of the fingerprints in the second set of reflectometry results with the respective corresponding fingerprint in the federated fingerprint;
compare a location of the particular section to the locations of the environmental events;
in response to the location of the particular section matching one of the locations of the environmental events, determine that the physical tampering has not occurred; and
in response to the location of the particular section not matching one of the locations of the environmental events, determine that the physical tampering has occurred.